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Atlantirivulus simplicis

Declining

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Atlantirivulus simplicis faces severe threats from habitat degradation in its restricted Atlantic Forest range. Urban expansion and agricultural conversion have fragmented the small freshwater systems this killifish depends on, while water pollution from agricultural runoff and domestic waste further compromises water quality in remaining habitats. The species' limited distribution makes it particularly vulnerable to localized environmental changes.

Threat summary

Habitat

This killifish inhabits small freshwater streams and pools within the Atlantic Forest biome of southeastern Brazil. It typically occurs in shallow, slow-moving waters with dense aquatic vegetation and soft substrates.

Frequently asked questions

Why is Atlantirivulus simplicis classified as Endangered?
Atlantirivulus simplicis is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Atlantirivulus simplicis faces severe threats from habitat degradation in its restricted Atlantic Forest range. Urban expansion and agricultural conversion have fragmented the small freshwater systems this killifish depends on, while water pollution from agricultural runoff and domestic waste further compromises water quality in remaining habitats. The species' limited distribution makes it particularly vulnerable to localized environmental changes.
Where does Atlantirivulus simplicis live?
Atlantirivulus simplicis occurs in Guam. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Atlantirivulus simplicis?
The main threats to Atlantirivulus simplicis are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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